Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d07a7a4c80e85e4…

MALICIOUS

PDF

72.0 KB Created: 2021-02-28 14:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9fbd470619a7393c79683ba06e151847 SHA-1: bd1579a6105495f0f674faac3e5e017992b0e836 SHA-256: 7d07a7a4c80e85e4e3f33b40f9b10e5f65b00a8259325aa86c05d2d82e70b626
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jacksth.ru/award?keyword=what+is+the+sales+tax+in+fort+worth+texas PDF link annotation
    • https://cdn.sqhk.co/xuwadezab/diis904/22744928298.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/6tb0Rhi/pevor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451206/normal_600908b8d137e.pdfIn PDF document text
    • http://fupodiruza.66ghz.com/good_night_pics_for_whatsapp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443812/normal_5fe6ff530bafb.pdfIn PDF document text
    • http://usacreditcheck.info/bella_4_slice_rotating_black_belgian_waffle_maker_instructions8wqen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403128/normal_600f9b68e2670.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421460/normal_5fea156088b43.pdfIn PDF document text
    • https://cdn.sqhk.co/nusuguponu/9NqvJGu/drumsticks_on_the_grill_indirect_heat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483610/normal_5fe5d9f03dcfc.pdfIn PDF document text
    • https://cdn.sqhk.co/nivatasob/ig6iiR8/40570765445.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374362/normal_5feff6e216a76.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/wyVriig/coc_clashy_constructs_scenery.pdfIn PDF document text
    • https://cdn.sqhk.co/kafekogi/hGjchib/61637836588.pdfIn PDF document text
    • http://5-euro.info/6194346661082rc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zapofekeba.rf.gd/81951930704.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4D 5028 bytes
SHA-256: 11feaae35108341f77d6ff1345eb8cdf2b8f018e60b37240ddc01d9926a2a850
font_01_sfnt_off0000ee7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7D 10764 bytes
SHA-256: 29f5413a9e16912702789b0677e7d905ad061db01ff143ef51f478f274c13611